GNU Radio 2.x: microtune_eval_board_defs.h Source File

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# microtune_eval_board_defs.h

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    00001 /* -*-C-*-
    00002 *******************************************************************************
    00003 *
    00004 * File:         microtune_eval_board_defs.h
    00005 * Description:  defines for parallel port control of eval board
    00006 *
    00007 *******************************************************************************
    00008 */
    00009
    00010 /*
    00011  * Copyright 2001 Free Software Foundation, Inc.
    00012  *
    00013  * This file is part of GNU Radio
    00014  *
    00015  * GNU Radio is free software; you can redistribute it and/or modify
    00016  * it under the terms of the GNU General Public License as published by
    00017  * the Free Software Foundation; either version 2, or (at your option)
    00018  * any later version.
    00019  *
    00020  * GNU Radio is distributed in the hope that it will be useful,
    00021  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    00022  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    00023  * GNU General Public License for more details.
    00024  *
    00025  * You should have received a copy of the GNU General Public License
    00026  * along with GNU Radio; see the file COPYING.  If not, write to
    00027  * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    00028  * Boston, MA 02111-1307, USA.
    00029  */
    00030
    00031 #ifndef _MICROTUNE_EVAL_BOARD_DEFS_H_
    00032 #define _MICROTUNE_EVAL_BOARD_DEFS_H_
    00033
    00034 /*
    00035  * The Microtune 4937DI5 cable modem tuner eval board is controlled
    00036  * by bit banging the PC parallel port.  This file defines the relevant
    00037  * bits.
    00038  *
    00039  * The parallel port has an 8 bit data port (output),
    00040  * an 8 bit control port (output) and
    00041  * an 8 bit status port (input).
    00042  *
    00043  * Not all bits of the control and status ports may be arbitrarily used.
    00044  */
    00045
    00046
    00047 // parallel port data port constants (output)
    00048
    00049 static const int UT_DP_TX_SDA           = 0x01; // upstream control bus
    00050 static const int UT_DP_TX_SCL           = 0x02; // upstream control bus
    00051 static const int UT_DP_TX_AS            = 0x04; // upstream control bus
    00052 static const int UT_DP_TX_ENABLE        = 0x08; // upstream h/w enable
    00053 // bits 4,5,6 not used
    00054 static const int UT_DP_TUNER_SDA_OUT    = 0x80; // tuner i2c bus data
    00055
    00056 // parallel port control port constants (output)
    00057
    00058 static const int UT_CP_TUNER_SCL        = 0x08; // tuner i2c bus clock
    00059 static const int UT_CP_MUST_BE_ZERO     = 0xf0; // must be zero
    00060
    00061 // parallel port status port constants (input)
    00062
    00063 // bits 0,1,2 not used
    00064 static const int UT_SP_TUNER_SCL_LOOP_BACK= 0x08; // inverted SCL loop back
    00065 static const int UT_SP_SHOULD_BE_ZERO   = 0x10; // reads as zero
    00066 static const int UT_SP_SHOULD_BE_ONE    = 0x20; // reads as one
    00067 // bit 6 not used
    00068 static const int UT_SP_TUNER_SDA_IN     = 0x80;
    00069
    00070
    00071 #endif /* _MICROTUNE_EVAL_BOARD_DEFS_H_ */